Extension panel



FIG. 1 is a perspective view of an extension panel showing my newdesign;

FIG. 2 is a front elevational view thereof;

FIG. 3 is an end elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevational view of the extension panel mounted on awall, the broken line showing of a wall is for illustrative purposesonly and forms no part of the claimed design;

FIG. 6 is an end elevational view thereof; and

FIG. 7 is a perspective view of thereof.

The ornamental design for an extension panel, as shown.